diff --git a/_themes/sphinx_rtd_theme/version_dropdown.html b/_themes/sphinx_rtd_theme/version_dropdown.html
index 69855bcda..af7d57e88 100644
--- a/_themes/sphinx_rtd_theme/version_dropdown.html
+++ b/_themes/sphinx_rtd_theme/version_dropdown.html
@@ -2,7 +2,8 @@
     <div class="version-dropdown">
         <lable for="version-list">Version:</lable>
     <select class="version-list" id="version-list" onchange="this.options[this.selectedIndex].value && (window.location = this.options[this.selectedIndex].value);">
-        <option value="http://moveit2_tutorials.picknik.ai">Moveit 2 - Foxy</option>
+        <option value="https://moveit.picknik.ai/humble/index.html">Moveit 2 - Humble</option>
+        <option value="https://moveit.picknik.ai/main/index.html">Moveit 2 - Rolling</option>
         <option value="http://ros-planning.github.io/moveit_tutorials/">MoveIt 1 - Noetic</option>
         <option value="" selected>MoveIt 1 - Melodic</option>
     </select>
diff --git a/htmlproofer.sh b/htmlproofer.sh
index 09aa2ef5d..5c8312dc1 100755
--- a/htmlproofer.sh
+++ b/htmlproofer.sh
@@ -7,7 +7,11 @@ export REPOSITORY_NAME=${PWD##*/}
 echo "Testing branch ${GITHUB_BASE_REF:-$GITHUB_HEAD_REF} of $REPOSITORY_NAME"
 
 # Install htmlpoofer
-sudo gem update --system --no-document
+# sudo gem update --system --no-document # Can't update all gems ruby on 18.04 is EOL
+sudo gem install rubygems-update -v '<3' --no-document
+sudo gem install nokogiri:1.12.5 --no-document
+sudo gem install public_suffix -v 4.0.7
+
 gem --version
 sudo gem install html-proofer -v 3.19 # newer 4.x requires different cmdline options
 # Install ROS's version of sphinx